flowchart LR
  subgraph "Your Computer"
    Host[MCP Host<br/>(e.g., Claude Desktop, IDEs)]
    S1[MCP Server A]
    S2[MCP Server B]
    S3[MCP Server C]
    D1[Local Data Source A]
    D2[Local Data Source B]
    Host -->|MCP Protocol| S1
    Host -->|MCP Protocol| S2
    Host -->|MCP Protocol| S3
    S1 <--> D1
    S2 <--> D2
  end

  subgraph "Internet"
    D3[Remote Service C]
    S3 <--> D3
  end